Methylome-wide analysis in systemic microbial-induced experimental periodontal disease in mice with different susceptibility.

Objective: The study delved into the epigenetic factors associated with periodontal disease in two lineages of mice, namely C57bl/6 and Balb/c. Its primary objective was to elucidate alterations in the methylome of mice with distinct genetic backgrounds following systemic microbial challenge, employing high-throughput DNA methylation analysis as the investigative tool. Methods: Porphyromonas gingivalis (Pg)was orally administered to induce periodontitis in both Balb/c and C57bl/6 lineage. After euthanasia, genomic DNA from both maxilla and blood were subjected to bisulfite conversion, PCR amplification and genome-wide DNA methylation analysis using the Ovation RRBS Methyl-Seq System coupled with the Illumina Infinium Mouse Methylation BeadChip. Results: Of particular significance was the distinct methylation profile observed within the Pg-induced group of the Balb/c lineage, contrasting with both the control and Pg-induced groups of the C57bl/6 lineage. Utilizing rigorous filtering criteria, we successfully identified a substantial number of differentially methylated regions (DMRs) across various tissues and comparison groups, shedding light on the prevailing hypermethylation in non-induced cohorts and hypomethylation in induced groups. The comparison between blood and maxilla samples underscored the unique methylation patterns specific to the jaw tissue. Our comprehensive methylome analysis further unveiled statistically significant disparities, particularly within promoter regions, in several comparison groups. Conclusion: The differential DNA methylation patterns observed between C57bl/6 and Balb/c mouse lines suggest that epigenetic factors contribute to the variations in disease susceptibility. The identified differentially methylated regions associated with immune regulation and inflammatory response provide potential targets for further investigation. These findings emphasize the importance of considering epigenetic mechanisms in the development and progression of periodontitis.

Validación de contenido de un cuestionario para explorar actitudes y prácticas de odontólogos no especialistas en periodoncia

Objetivo: Validar el contenido de un cuestionario de auto-reporte en español para explorar actitudes, prácticas y barreras de odontólogos no especialistas en periodoncia frente al diagnóstico y tratamiento de problemas periodontales y criterios para derivar. Materiales y métodos: Seis especialistas en periodoncia de cinco países latinoamericanos construyeron versión#1 de un cuestionario. 21 expertos de tres áreas disciplinares de 6 países valoraron de 1 a 5 (1: totalmente en desacuerdo, 5: totalmente de acuerdo) cada ítem en su pertinencia, relevancia, claridad y coherencia. Según grado de acuerdo se reformuló cada ítem y se construyó versión#2 que fue piloteada en 60 odontólogos no especialistas en periodoncia, 3 de ellos fueron entrevistados para evaluar la comprensión y semántica. Luego del análisis se elaboró la versión final (versión#3). Resultados: Los ítems formulados de versión#1 tuvieron una valoración promedio de 4,6 (rango 3.7-5). Fueron reformulados evitando palabras confusas y que tuvieran aceptación transversal en países participantes, se eliminó ítem con menor puntuación de acuerdo de expertos. La aplicación de versión#2 tuvo un tiempo de respuesta de 12 minutos, se reformularon opciones y agregaron 4 ítems para obtener la versión final con 44 preguntas. Conclusiones: Se construyó un cuestionario de auto-reporte con validez de contenido para evaluar actitudes y prácticas en salud-enfermedad periodontal en odontólogos generales o no especialistas en periodoncia de habla hispana.

Aim: T o validate the content of a self-report questionnaire in Spanish to explore attitudes, practices and barriers of dentists non-specialized in periodontics when facing the diagnosis and treatment of periodontal problems and criteria for referral. Materials and methods: Six specialists in periodontics from five Latin American countries constructed version#1 of a questionnaire. Twenty-one experts from 3 disciplinary areas from 6 countries rated each item from 1 to 5 (1: totally disagree, 5: totally agree) regarding its appropriateness, relevance, clarity, and coherence. According to the degree of agreement, the item was reformulated, and version #2 was built, which was tested on 60 dentists non-specialized in periodontics. Then, 3 of them were interviewed to assess comprehension and semantics. After analysis, the final version was prepared (version#3). Results: The items formulated in version#1 had an average score of 4.6 (range 3.7-5). Questions and options were reformulated, avoiding confusing words and having transversal acceptance in the participating countries. The items with the lowest degree of expert agreement were eliminated. The application of version#2 had a response time of 12 minutes, options were reformulated, and 4 items were added to obtain the final version with 44 questions. Conclusions: A self-report questionnaire with content validity was constructed to assess attitudes and practices in periodontal health and disease in Spanish-speaking general dentists or non-specialists in periodontics.

Interaction of periodontal clinical indicators in metabolic syndrome and nonalcoholic fatty liver disease: Implications for preventive interventions.

Introduction: The behavior of periodontal clinical indicators in metabolic syndrome (MetS) and fatty liver disease (NAFLD) are not clearly defined. It's even considered that high-risk cases for NAFLD are currently underreported or not identified in a timely manner. The aim of the study is to elucidate the interaction of periodontal clinical indicators in MetS and NAFLD. Materials and methods: 336 patients were eligible because they met the diagnostic criteria for metabolic syn-drome and nonalcoholic fatty liver disease. Those selected were randomly selected for a cross-sectional study. Metabolic status and non-alcoholic fatty liver disease were measured using the MetS Metabolic Syndrome Diagnostic Criteria (NCEP/ATP-III) and laboratory tests, respectively. In addition, periodontal clinical indicators were evaluated: probing depth, clinical attachment, plaque index and gingival bleeding. Results: The association for NAFLD and probing depth was p = 0.736. The association for MetS and probing depth was p = 0.598. For NAFLD and clinical attachment loss, the association was p = 0.751. For MetS and clinical attachment loss, the association was p = 0.435. The plaque index for MetS was p = 0.238. The plaque index for NAFLD was p = 0.269. The gingival bleeding association for NAFLD was p = 0.673 and for MetS was p = 0.522. Conclusions: Periodontal clinical indicators of metabolic syndrome were as-sociated with elevated serum levels of low-density lipoproteins (LDL), HDL-cholesterol, and triglycerides. However, when comparing the values in NAFLD and MetS, a greater significance is evident in the first study group.

Relationship between Carotid Intima-Media Thickness, Periodontal Disease, and Systemic Inflammation Biomarkers in an Adult Population.

A positive relationship has been reported between advanced periodontitis and carotid intima-media thickness (cIMT) measurement. The aim of this study was to investigate this relationship with parameters for periodontitis, such as PISA and systemic inflammation biomarkers. An observational descriptive cross-sectional study was conducted. A blood sample was collected from 75 subjects to analyze glucose, total cholesterol, HDL, LDL, and cytokine values. Increased cIMT was found in 32% of the patients with fewer teeth. Patients with periodontitis had a larger periodontal inflamed surface area (PISA) (p = 0.000) and had a 1.42-times-higher risk of having increased cIMT values compared to periodontally healthy individuals, though without a statistically significant association. Higher values in the left cIMT, IL-8, and TNF-α were found in men than in women with significant differences. In the multivariate analysis involving cytokines, age continues to be linked to increased cIMT values. INF-γ showed a trend towards a protective effect; as the IMT-M decreases, there is an increase in the expression of INF-γ, and a higher proportion of subjects with elevated INF-γ concentrations demonstrated normal IMT-C. This study did not find a statistically significant association between cIMT and periodontal disease, but the risk of having increased cIMT is 1.42-times higher for individuals with periodontitis.

[Knowledge level of periodontal health in students of health sciences. a cross-sectional study]. / Nivel de conocimiento sobre salud periodontal de estudiantes de ciencias de la salud. un estudio transversal.

Introduction: Periodontal disease is a multifactorial chronic inflammatory disease, so knowledge about this disease is important for health professionals for an assertive and early diagnosis. Objective: Determine the level of knowledge about periodontal health in Health Sciences students at a private university in Lima-Perú. Materials and Methods: Through a descriptive and cross-sectional study, 200 students from the Faculty of Health Sciences were evaluated. The sample size was obtained using a proportion estimation formula. The level of knowledge about periodontal health was measured using a specific virtual and self-applicable questionnaire, which was fully validated. University students of legal age and who signed the informed consent were included. This consisted of 16 questions about the causes, signs, prevention habits and relationship with systemic diseases related to periodontal disease. The data were analyzed using descriptive statistics (absolute and relative frequencies) and means and averages for age. Results: The level of knowledge was medium in 38%, high in 32.5% and low in 29.5% of the students surveyed. 96.5% knew that periodontal disease is preventable; However, 91.5% do not know what its main clinical sign is. Conclusions: The use of a self-applicable and specific questionnaire is beneficial to evaluate and measure knowledge about periodontal health, and the Health Sciences students evaluated have a medium level of knowledge about periodontal health.

Factores determinantes de extracción de dientes permanentes en pacientes que asisten a hospitales y/o servicios odontológicos / determinant factors in the permanent teeth extractions in patients attending dental hospitals of dental services

Este artículo tiene como objetivo identificar y analizar los factores determinantes que conducen a la extracción de dientes permanentes en pacientes que asisten a hospitales y/o servicios odontológicos. A través de una revisión exhaustiva de la literatura científica y datos epidemiológicos, se exploran las principales causas de pérdida dental, incluyendo caries, enfermedad periodontal, trauma y factores socioeconómicos. Se discuten las implicaciones clínicas y de salud pública de estos hallazgos, así como estrategias preventivas y terapéuticas para reducir la incidencia de extracciones dentales (AU)

This article aims to identify and analyze the determining factors leading to the extraction of permanent teeth in patients attending hospitals and/or dental services. Through a comprehensive review of scientific literature and epidemiological data, the main causes of tooth loss are explored, including caries, periodontal disease, trauma, and socioeconomic factors. The clinical and public health implications of these findings are discussed, as well as preventive and therapeutic strategies to reduce the incidence of dental extractions (AU)

Association between cognitive rumination and periodontal disease, tooth loss and oral health-related quality of life in a rural Southern Brazil population.

OBJECTIVES: Rumination is a maladaptive emotion regulation strategy. It has been associated with several psychological disorders and physical problems. This cross-sectional study aimed to evaluate whether cognitive rumination is associated with periodontal disease (PD), tooth loss (TL), and oral health-related quality of life (OHRQoL). MATERIALS AND METHODS: A population-based sample from a rural area in southern Brazil was evaluated. Calibrated examiners carried out a complete periodontal examination at six sites-per-tooth. Rumination and Reflection (RRQ) and Oral Health Impact Profile (OHIP-14) questionnaires were administered. Regression modeling was used to assess the prevalence ratio (PR) between rumination and PD and to estimate the rate ratio (RR) between rumination and TL and rumination and OHIP. RESULTS: Severe periodontitis prevalence of 33% was observed in the sample. In the Poisson-adjusted model (n = 587), individuals who ruminate more have 27% more periodontal disease (PR: 1.27, 95%CI:1.02 - 1.60). Regarding TL and OHIP, negative binomial regression (n = 672) showed an association with rumination, but it was not significant (RR 1.14, 95%CI 0.99 - 1.31) and (RR 1.20, 95%CI 0.98 - 1.48), respectively. CONCLUSIONS: Cognitive rumination was independently associated with periodontal disease in individuals living in a rural area. Borderline non-significant estimates were observed regarding TL and OHRQoL. More research using different populations and focusing on individual's responses to psychological stress may confirm these results. CLINICAL RELEVANCE: Emotional regulation is crucial to deal with stress, anxiety, and depression. Since psychopathologies are among the most prevalent diseases in the world, it is critical to understand the role of these issues in dental outcomes.

Effect of Treating Periodontal Disease in Pregnant Women to Reduce the Risk of Preterm Birth and Low Birth Weight: An Umbrella Review.

Background: The aim of this review was to evaluate the effects of periodontal disease (PD) treatment in pregnant women to reduce the risk of preterm birth (PB) and low birth weight (LBW) by conducting an umbrella review. Methods: A comprehensive search for the literature up to April 2024 was conducted across multiple databases including PubMed, Cochrane Library, Scopus, EMBASE, Scielo, Web of Science, Google Scholar, Proquest Dissertations and Theses, and OpenGrey. We specifically targeted systematic reviews (SRs) with or without meta-analyses, irrespective of language or time constraints, focusing on primary studies examining the effect of PD treatment in pregnant women to reduce the risk of PB and LBW. Various types of non-systematic reviews, intervention studies, observational studies, preclinical and basic research, summaries, comments, case reports, protocols, personal opinions, letters, and posters were excluded from consideration. The quality and overall confidence of the included studies were assessed using the AMSTAR-2 tool. Results: After the initial search, 232 articles were identified, of which only 24 met the selection criteria after exclusion. The majority of these studies indicated that periodontal treatment reduces the risk of PB and LBW. Conclusions: According to the findings and conclusions drawn from the SRs with a high overall confidence level, PD treatment in pregnant women reduces the risk of PB and LBW.

Chronic oral disease burden at the first 1000 days: Intergenerational risk factors, BRISA cohort.

OBJECTIVE: To analyze multiple-causal models, including socioeconomic, obesity, sugar consumption, alcohol smoking, caries, and periodontitis variables in pregnant women with early sugar exposure, obesity, and the Chronic Oral Disease Burden in their offspring around the first 1000 days of life. METHODS: The BRISA cohort study, Brazil, had two assessments: at the 22nd-25th gestational weeks and during the child's second year (n = 1141). We proposed a theoretical model exploring the association between socioeconomic and pregnancy factors (age, smoking, alcohol, sugars, obesity, periodontitis, and caries) and child's variables (sugars and overweight) with the outcome, Chronic Oral Disease Burden (latent variable deduced from visible plaque, gingivitis, and tooth decay), using structural equation modeling. RESULTS: Caries and periodontitis were correlated in pregnant women. Addictive behaviors in the gestational period were correlated. Obesity (Standardized coefficient - SC = 0.081; p = 0.047) and added sugar consumption (SC = 0.142; p = 0.041) were observed intergenerationally in the pregnant woman-child dyads. Sugar consumption by the children (SC = 0.210; p = 0.041) increased the Chronic Oral Disease Burden. CONCLUSIONS: Poor caries and periodontal indicators were correlated in pregnant women and their offspring. Obesity and sugar consumption act intergenerationally. Oral health in early life may change life trajectory since the worst oral conditions predict main NCDs.

Humic Acid Derived from Agricultural Biomass Mitigates Alveolar Bone Loss and Modulates Systemic Inflammatory Cytokines in Rats with Periodontitis.

BACKGROUND: Humic acid (HA) is a bioproduct that can be extracted from different sources and has anti-inflammatory properties that have been little explored in the treatment and prevention of Periodontal Disease (PD). Thus, we aimed to investigate the effects of oral administration of HA on the progression of PD in rats. METHODS: Twenty-four male Wistar rats were distributed into three experimental groups (Control/ Sham, PD, and PD + HA). HA was administered by gavage (80 mg/kg/day) for 28 days, and PD was induced 14 days after the beginning of treatment. Bone loss, bone topography, and surface elemental composition were analyzed. Circulating IL1-beta, TNF-alpha, and IL-10 levels were evaluated through Enzyme-Linked Immunosorbent Assay (ELISA). RESULTS: The animals treated with HA showed lower bone loss (p < 0.05). Calcium and phosphorus levels on the alveolar bone surface were lower in the PD group (p < 0.05) compared to the control group, whereas the animals treated with HA exhibited attenuation in this loss (p < 0.05). The animals treated with HA showed reduced TNF-alpha, IL1-beta, IL-10, and the TNF-alpha/IL-10 ratio compared to those with PD (p < 0.05). CONCLUSION: Treatment with HA attenuated the parameters of alveolar bone loss and modulated systemic inflammatory parameters in rats with ligature-induced PD.

Patent Mining on the Use of Antioxidant Phytochemicals in the Technological Development for the Prevention and Treatment of Periodontitis.

Periodontal disease is an inflammatory condition characterized by an aberrant immune response against a dysbiotic dental biofilm, with oxidative stress performing an essential role in its pathogenesis. This paper presents a patent mining, performed in the Orbit Intelligence patent database, related to antioxidant phytochemicals in the technological developments that are working to prevent and treat periodontal disease. To access the documents, the descriptors "PERIODONTAL" and "ANTIOXIDANT" were typed in the title, abstract, and claim search fields. A total of 322 patents demonstrate the growing interest in researching natural antioxidants for scientific and technological purposes. The top ten countries regarding the number of family patents produced were the United States, the European Office, Japan, South Korea, China, India, Mexico, Denmark, Canada, and Great Britain. The most cited compounds were vitamin C, green tea, quercetin, melatonin, lycopene, resveratrol, and curcumin. These compounds have been used for the technological development of gels, membranes, dentifrices, chewing gum, orally disintegrating film, mouthwash, mouth spray, and mouth massage cream and exhibit the ability to neutralize free radicals and reduce oxidative stress, a critical factor in the development and progression of periodontal diseases. The patent documents have shown that using antioxidant compounds in conjunction with traditional periodontal treatments is a promising area of interest in periodontal therapy.

Periodontal status in adult patients with leukemia: a literature review / Condição periodontal em pacientes adultos com leucemia: revisão de literatura

Periodontal disease is a highly prevalent chronic inflammatory disease that affects the tissues that support the teeth, while leukemia is a type of malignous cancer that affects the production of blood cells. Recent studies suggest that immune response and microbial disbiosis related to periodontal disease may be associated with an increased risk of developing leukemia and may affect its prognosis, as well as leukemia type and treatment may also have effects on the periodontium, demanding a interdiscipinary approach of these patients. The aim of this study was to conduct a literature review to assess the association between periodontal disease and leukemia in adult patients. An electronic database serch using the descriptors was performed. Clinical studies with periodontal examination in adult individuals with leukemia were selected. After literature search, 9 studies were reviewed. Gingival bleeding and periodontal pockets were frequent findings. Periodontitis prevalence varied among studies, ranging from 29% to 82,4% in patients diagnosed with leukemia. The relationship between periodontal disease and leukemia is complex and multifaceted and there are few studies available in adults, with heterogeneous exam protocols. Still, the high prevalence of gingivitis and periodontitis found in the studies suggest that periodontal diagnosis and treatment could be a helpful tool to prevent further complications in leukemia treatment.

A doença periodontal é uma doença inflamatória crônica altamente prevalente e que afeta os tecidos que sustentam os dentes, enquanto a leucemia é um tipo de câncer maligno que afeta a produção de células sanguíneas. Estudos recentes sugerem que a resposta imune e a disbiose microbiana relacionada a doença periodontal podem estar associadas a um risco aumentado de desenvolver leucemia e pode afetar o prognóstico da doença, assim como o tipo de leucemia e o tratamento também podem ter efeitos no periodonto, exigindo uma abordagem interdisciplinar desses pacientes. O objetivo deste estudo foi realizar uma revisão de literatura para avaliar a associação entre doença periodontal e leucemia em pacientes adultos. Foi realizada uma busca eletrônica em bancos de dados utilizando os descritores. Foram selecionados estudos clínicos com exame periodontal em indivíduos adultos com leucemia. Após busca na literatura, 9 estudos foram revisados. Sangramento gengival e bolsas periodontais foram achados frequentes. A prevalência da periodontite variou entre os estudos, sendo de 29% a 82,4% em pacientes diagnosticados com leucemia. A relação entre doença periodontal e leucemia é complexa e multifacetada e existem poucos estudos disponíveis em adultos, com protocolos de exames heterogêneos. Ainda assim, a alta prevalência de gengivite e periodontite encontrada nos estudos sugere que o diagnóstico e o tratamento periodontal podem ser uma ferramenta útil para prevenir maiores complicações no tratamento da leucemia.

Relação entre a doença periodontal e a doença de Alzheimer - Revisão da Literatura / Relationship between periodontal disease and Alzheimer disease ­ literature review

O objetivo do presente estudo foi revisar a literatura para buscar evidências na associação entre a doença de Alzheimer e a Periodontite. A metodologia usada resultou numa busca às bases de dados PubMed/MEDLINE, Cochrane Library e Web of Science, através dos artigos publicados entre o período de maio de 2000 a maio de 2022. A doença de Alzheimer (DA) é classificada como uma condição neurodegenerativa, um grupo heterogêneo de doenças caracterizadas pela perda lenta e progressiva de uma ou mais funções do sistema nervoso. A doença periodontal (DP) é uma doença infecciosa e inflamatória que causa principalmente destruição óssea alveolar e perda dentária e estima-se que entre 20 e 50% da população geral possa sofrer de DP, dos quais 15-20% apresentam formas graves. A inflamação desempenha um papel crítico no aparecimento e progressão de ambas as doenças. A conclusão desta revisão é que a literatura estudada mostra que os patógenos periodontais e as citocinas pró-inflamatórias contribuíram para a progressão do processo neurodegenerativo da doença de Alzheimer. Porém, são necessários mais estudos clínicos controlados randomizados para a confirmação da relação causal desta associação.

The aim of this study was to review the literature to look for evidence in the association between Alzheimer's disease and Periodontitis. The methodology used resulted in a search of the PubMed/MEDLINE, Cochrane Library and Web of Science databases, through the articles published between May 2000 and May 2022. Alzheimer's disease (AD) is classified as a neurodegenerative condition, a heterogeneous group of diseases characterized by the slow and progressive loss of one or more functions of the nervous system. Periodontal disease (PD) is an infectious and inflammatory disease that mainly causes alveolar bone destruction and tooth loss and it is estimated that between 20 and 50% of the general population may suffer from PD, of which 15-20% present severe forms. Inflammation plays a critical role in the onset and progression of both diseases. The conclusion of this review is that the literature studied shows that periodontal pathogens and pro-inflammatory cytokines contributed to the progression of the neurodegenerative process of Alzheimer's disease. However, more randomized controlled clinical trials are needed to confirm the causal relationship of this association.

Association between Periodontal Disease and Obesity: Umbrella Review.

Objective: Determine the association between periodontal disease (PD) and obesity through an umbrella review. Materials and Methods: A search for information until March 2024 was carried out in the following electronic databases: PubMed, Cochrane library, Scopus, SciELO, Web of Science, Google Scholar, Proquest Dissertations and Theses, and OpenGrey. We included studies that were systematic reviews (SR) with or without meta-analysis, without time or language restrictions, that evaluated primary studies that associated PD with obesity. Literary or narrative reviews, rapid reviews, intervention studies, observational studies, preclinical and basic research, summaries, comments, case reports, protocols, personal opinions, letters, and posters were excluded. The AMSTAR-2 tool was used to determine the quality and overall confidence of the included studies. Results: The preliminary search yielded a total of 419 articles, discarding those that did not meet the selection criteria, leaving only 14 articles. All studies reported that PD was associated with obesity, with an OR and RR ranging from 1.1 to 1.46 and 1.64 to 2.21, respectively. Conclusions: Based on the results and conclusions of the SR with a high overall confidence level, PD is associated with obesity.

Characterization of the oral microbiota and the relationship of the oral microbiota with the dental and periodontal status in children and adolescents with nonsyndromic cleft lip and palate. Systematic literature review and meta-analysis.

OBJECTIVE: To identify the characteristics of the oral microbiota and the relationship of the dental caries and periodontal status in patients aged 0 to 18 years with non-syndromic cleft lip and palate (CLP). MATERIALS AND METHODS: A systematic review of the literature was carried out. Five databases were consulted, including publications in English, Spanish and Portuguese. The evaluations of the quality of the observational studies and the experimental studies were carried out with the Newcastle-Ottawa scale and CONSORT guidelines, respectively. The risk of bias of the studies was determined using Rev Manager 5.4, and 5 publications were meta-analyzed. RESULTS: The cariogenic microbiota of children and adolescents with cleft lip and palate was similar to that of children without clefts, although with higher counts of Streptococcus mutans and Lactobacillus spp. The periodontopathogenic microbiota was related to the presence of Campylobacter spp, Fusobacterium spp, Fusobacterium nucleatum, Prevotella intermedia/nigrescens, Parvimonas micra and Porphyromonas gingivalis, considered microorganisms with high pathogenic capacity. Heterogeneity was shown in relation to the microbiota and the type of fissure, presenting numerous microorganisms associated with the pre- and post-surgical condition (cheilorrhaphy and palatorrhaphy) such as Staphylococcus aureus, Streptococcus beta hemolyticus, Klebsiella pneumoniae and Klebsiella oxytoca, Moraxella catarrhalis, Candida spp, Candida albicans, Candida krusei and Candida tropicalis. The meta-analysis revealed that patients with cleft lip and palate were 2.03 times more likely to have caries than the control group (p<0.005). CONCLUSION: In the microbiota, there was a great diversity of microorganisms that can vary according to the type of fissure and surgical interventions predisposing patients to a greater probability of dental caries, it is important to take into account the technique used to describe the oral microbiota in order to be able to compare the different studies. CLINICAL RELEVANCE: Studying the microbiota and the relationship of dental caries and periodontal status in children and adolescents with cleft lip and palate can facilitate the comprehensive care of patients with these conditions.

Dental Stem Cells and Lipopolysaccharides: A Concise Review.

Dental tissue stem cells (DTSCs) are well known for their multipotent capacity and regenerative potential. They also play an important role in the immune response of inflammatory processes derived from caries lesions, periodontitis, and gingivitis. These oral diseases are triggered by toxins known as lipopolysaccharides (LPS) produced by gram-negative bacteria. LPS present molecular patterns associated with pathogens and are recognized by Toll-like receptors (TLRs) in dental stem cells. In this review, we describe the effect of LPS on the biological behavior of DTSCs. We also focus on the molecular sensors, signaling pathways, and emerging players participating in the interaction of DTSCs with lipopolysaccharides. Although the scientific advances generated provide an understanding of the immunomodulatory potential of DTSCs, there are still new reflections to explore with regard to their clinical application in the treatment of oral inflammatory diseases.

Cambios en los conocimientos sobre la relación periodontitis/enfermedades sistémicas. Estudio transversal no analítico / Changes in knowledge regarding the relationship between periodontitis and systemic diseases. Non-analytical cross-sectional study

Introducción: Las enfermedades periodontales tienen efectos locales y sistémicos sobre algunas enfermedades sistémicas. Propósito: Identificar cambios después de una jornada informativa preventiva sobre la relación de las EP y las enfermedades sistémicas en un ambiente universitario de carreras del área de la salud. Materiales y métodos: Estudio transversal no analítico cuyo objeto de estudio fue el cambio de la información obtenida por los participantes de una jornada de educación en salud en una muestra no aleatoria de 264 individuos de facultades de salud diferentes a odontología quienes recibieron encuestas "antes y después". Las variables de los cambios en los conocimientos se evaluaron mediante una escala Likert. Resultados: Antes de la estrategia, el 51,6% consideraban poco importante o que podría ser importante la salud oral como estilo de vida saludable vs un 99.2% al final. El 67.8 % de los sujetos, consideraban que la enfermedad periodontal no compartía factores de riesgo con condiciones sistémicas vs un 92.9%. Se incrementó de un 67.75% a 93.2% el reconocimiento del control del riesgo periodontal como estrategia para incidir en las enfermedades sistémicas. Conclusión: Una estrategia educativa sensibilizar positivamente sobre la importancia de la prevención de las enfermedades periodontales y las condiciones sistémicas.

Introduction: Periodontal diseases have local and systemic effects on some systemic diseases. Purpose: Identify changes after a preventive information session on the relationship between PD and systemic diseases in health faculties. Materials and methods: Non-analytical cross-sectional study whose object was the change in the information obtained by the participants of a health education session in a non-random sample of 264 individuals from health faculties other than dentistry who received "before and after" surveys. The variables were evaluated using a Likert scale. Results: Before the strategy, 51.6% considered oral health to be important for a healthy lifestyle vs. 99.2% at the end of the session. 67.8% of the subjects considered that periodontal disease shared risk factors with systemic conditions before the session vs. 92.9% after it. The recognition of periodontal risk control as a strategy to influence systemic diseases increased from 67.75% to 93.2%. Conclusion: An educational strategy raises a positive awareness of the importance of preventing periodontal diseases and systemic conditions.

Subgingival biofilm microbiome in individuals with asthma and periodontitis: Metagenomic analysis.

OBJECTIVE: This observational study aimed to explore the metagenomics of subgingival biofilms in individuals with varying degrees of asthma, from severe to none, to elucidate the association between the subgingival microbiome and asthma. MATERIALS AND METHODS: Subgingival biofilm samples were collected from thirty participants at the Asthma Control Program Outpatient Clinic in Bahia (ProAR). These samples were categorized into six groups based on the severity of asthma and the presence or absence of periodontitis. We employed next-generation sequencing (Illumina MiSeq), targeting the 16S rRNA gene, to characterize the microbial communities present. Our analysis included descriptive statistics and sequencing data, evaluated using multivariate statistical methods such as the Shannon index, principal coordinate analysis, and the Bray-Curtis dissimilarity. RESULTS: Our findings indicate a higher prevalence of periodontally detrimental bacterial genera in individuals with severe asthma and periodontitis. Additionally, individuals with asthma, but without periodontitis, exhibited a tendency toward dysbiosis, particularly in cases of severe asthma. CONCLUSION: This research provides new insights into the composition of the subgingival microbiome in individuals with varying severities of asthma and periodontitis. The genera identified in this study underscore the need for further investigations to build upon these findings.

Periodontitis and alveolar resorption in human skeletal remains: The relationship between quantitative alveolar bone loss, occlusal wear, antemortem tooth loss, dental calculus and age at death in a low socioeconomic status, modern forensic human collection from Yucatan.

OBJECTIVE: This paper assesses the relationship between the distance between the cemento-enamel junction and alveolar crest and risk factors commonly associated with periodontitis. MATERIALS: Eighty individuals between 28 and 92 years old with known biological sex and age were analyzed from a 20th century forensic human collection from Merida, Yucatan (Mexico). METHODS: Macroscopic assessment, along with metric analysis, was employed using a probe. RESULTS: Ante-mortem tooth loss was positively correlated with the distance between the cemento-enamel junction and alveolar crest, as was the presence of root calculus in females. CONCLUSIONS: Cemento-enamel junction to alveolar crest distance is not a reliable indicator of periodontitis since it is not directly related to periodontitis-causing infectious pathogens, and since ante-mortem tooth loss can affect root exposure. SIGNIFICANCE: This study demonstrates that a purely quantitative approach to diagnosing periodontitis in archaeological and forensic human remains can be misleading. LIMITATIONS: The skeletal collection is only representative of the low socioeconomic class of Merida, and its female cohort is underrepresented. In addition, because the Xoclan collection is modern, limitations (particularly with respect to tooth wear) of the applicability of these interpretations to older archaeological remains exist. SUGGESTION FOR FURTHER RESEARCH: A combination of quantitative and qualitative characteristics of alveolar bone is needed to reliably diagnose periodontitis in skeletal populations.

[Impact of self-reported periodontal status on oral health-related quality of life in adult population with Type 2 Diabetes from Mexico City]. / Impacto del estado periodontal autorreportado en la calidad de vida relacionada con la salud oral en población adulta con diabetes tipo 2 de la Ciudad de México.

OBJECTIVE: Periodontitis ranks sixth as a type 2 diabetes (T2D) complication. According to its severity, it may cause pain, discomfort and tooth loss. The aim of this study was to evaluate the impact of self-reported periodontal status on the Oral Health Related Quality of Life (OHRQoL) of people with T2D. METHODS: A cross-sectional study was conducted involving seventy-nine adults with T2D who visited the Metabolic Syndrome clinic at the Cosío Villegas National Institute of Respiratory Diseases in Mexico City between August and November 2010. The OHRQoL was evaluated with the shortened Oral Health Impact Profile (OHIP-EE14). Periodontitis was measured by self-report, probing depth (PD), and clinical attachment loss (CAL). The association between self-reported periodontal status and OHRQoL was evaluated with binomial regression models. RESULTS: Mean age of the participants was 60,4 years (SD=9,6); diabetes duration was 10,1 years (SD=6,6). The OHRQoL was associated with self-perception of bad breath (RR=1,58; p=0,025), self-perception of poor gum health (RR=1,66; p=0,016), dissatisfaction with chewing ability (RR=2,22; p≤0,001), tooth loss due to mobility (RR=1,74; p=0,019), and presence of 20 teeth or less (RR=1,57; p=0,045). CONCLUSIONS: OHRQoL is associated with self-report of bad breath, poor gum health and dissatisfaction with chewing ability in people with T2D, which suggests that self-perceived oral conditions represent signs and symptoms of functional and psychological impairment related to severe periodontitis.

OBJECTIVE: La periodontitis es la sexta complicación de la diabetes tipo 2 (DT2); dependiendo de su severidad puede causar dolor, incomodidad o hasta pérdida dental. El objetivo del estudio fue evaluar el impacto del estado periodontal autorreportado en la Calidad de Vida Relacionada con la Salud Oral (CVRSO) en personas con DT2. METHODS: Se realizó un estudio transversal que incluyó a setenta y nueve adultos con DT2 atendidos en la Clínica de Síndrome Metabólico del Instituto Nacional de Enfermedades Respiratorias Cosío Villegas en la Ciudad de México, entre agosto y noviembre de 2010. La CVRSO se evaluó con el cuestionario Perfil de Impacto en la Salud Bucal acortado (OHIP-EE14). La periodontitis se evaluó por autorreporte, profundidad al sondeo (PS) y pérdida de inserción clínica (PIC). La asociación entre estado periodontal autorreportado y CVRSO se evaluó con modelos de regresión binomial negativa. RESULTS: La edad promedio fue de 60,4 años (DE=9,6); la duración de diabetes de 10,1 años (DE=6,6). La CVRSO se asoció con la autopercepción de mal aliento (RR=1,58, p=0,025), autopercepción de mala salud de las encías (RR=1,66, p=0,016), insatisfacción de la habilidad para masticar (RR=2,22, p≤0,001), pérdida de algún diente con movilidad previa (RR=1,74, p=0,019) y 20 dientes presentes o menos (RR=1,57, p=0,045). CONCLUSIONS: La CVRSO se asocia con el autorreporte de mal aliento, mala salud de las encías e insatisfacción de la habilidad para masticar en personas con DT2; esto sugiere que las condiciones bucales autopercibidas representan signos y síntomas de deterioro funcional y psicológico relacionados con la periodontitis severa.